SAISN ivo://nasa.heasarc/saisncat NASA/GSFC HEASARC Tsvetkov, Pavlyuk, Bartunov 2026-04-17 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Supernova This table comprises the Sternberg Astronomical Institute (SAI) Catalog of Supernovae. This version contains data on 2991 extragalactic supernovae (SNe) which were discovered from 1885 until December 12, 2004 and on their host galaxies. Data for host galaxies were compiled from the following catalogues: (1) RC3 (de Vaucouleurs et al. 1991, Cat. <VII/155>); (2) UGC (Nilson 1973. Cat. <VII/26>); (3) PGC (Paturel et al. 1989, Cat. <VII/119>); (4) MCG (Vorontsov-Velyaminov et al. 1962-1968, Cat. <VII/62>, <VII/100>); (5) ESO (Lauberts 1982, Cat. <VII/34>); (6) CfA (Huchra et al. 1994, see Cat <VII/193>), and (7) from van den Bergh (1994, Cat. <J/ApJS/92/219>). The main source of morphological types, major diameters and axial ratios was the RC3; the data from other sources were reduced to the system of RC3. Photographic magnitudes of galaxies were adopted from the UGC and the PGC together with individual data from the literature. The sources of recession velocities or cz values were the RC3, the CfA, the PGC and IAU Circulars. Position angles were taken from the RC3, UGC and the ESO catalogues, and inclination angles were mainly derived from data in RC3 according to Holmberg (1958MeLu2.136....1H). Some data for SNe and host galaxies were adopted from the GCVS (Samus et al. 1995, Cat. <II/205>). This table was created by the HEASARC in June 2005 based on CDS table II/256/sn.dat. Notice that the number of entries (2991) is more than the number of 2780 mentioned in the published reference: this is apparently due to the fact that the CDS table contains supernovae as recent as December 12, 2004, while the latter is complete only until January 6, 2004. This is a service provided by NASA HEASARC . 2004AstL...30..729T https://heasarc.gsfc.nasa.gov/W3Browse/all/saisncat.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=saisncat& GET text/xml 180 99999 true 351.72058333 -81.89586111 0.0833333333333333 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=saisncat GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_saisncat&Action=More+Options&Action=Parameter+Search&ConeAdd=1 STAR CATALOG 0.0833333333333333 Optical public saisncat Sternberg Astronomical Institute Catalog of Supernovae name Supernova Designation meta.id;meta.main char nullable galaxy Galaxy Identification meta.id.parent char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable sn_type Supernova Type src.class char nullable maxmag Magnitude of Supernova mag phot.mag;em.opt float nullable band_maxmag Flag Indicates Passband of Photometry or Note char nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable dec_offset N/S Offset of Supernova from Galactic Nucleus arcsec pos.angDistance double nullable uncertainty_flag Flags "?" and "??" Indicate Uncertain and Very Uncertain Supernova meta.code.qual char nullable maxmag_flag Flag Indicates Uncertainty on Supernova Magnitude meta.code.error;phot.mag;em.opt char nullable bii Galactic Latitude degree pos.galactic.lat double nullable log_diameter Decimal Log of Apparent Isophotal Major Diameter in Units of 0.1 arcmin log(0.1_arcmin) phys.size.diameter float nullable ra_galaxy Galaxy Right Ascension (J2000) meta.id.parent;pos.eq.ra char nullable limit_maxmag Limit Flag for Magnitude meta.code;phot.mag char nullable t_type Numerical Code of Morphological Type As in RC3 src.class short nullable luminosity_class Luminosity Class As in RC3 src.class.luminosity short nullable ra_offset E/W Offset of Supernova from the Nucleus of the Parent Galaxy (arcsec) arcsec pos.eq.ra;pos.distance double nullable ref_bmag Flag Indicates Reference Source for Magnitude meta.bib;phot.mag;em.opt short nullable morph_type Flags Indicate Morphological Type src.morph.type char nullable max_epoch Date of Maximum Light time.epoch char nullable dec_galaxy Galaxy Declination (J2000) meta.id.parent;pos.eq.dec char nullable redshift Redshift (for z > 1) src.redshift double nullable class Browse Object Classification src.class short nullable radial_velocity_flag Flag Indicates Uncertainty in Heliocentric Recession Velocity meta.code.error;phys.veloc;pos.heliocentric char nullable pa Position Angle Measured from North to East (degree) degree pos.posAng short nullable ra_offset_dir Flag [EW] Indicates East or West Direction meta.code;pos.eq.ra;pos.distance char nullable lii Galactic Longitude degree pos.galactic.lon double nullable search_program_code Code for Supernova Search Program (Observatory) meta.code;instr.obsty char nullable discovery_flag Flag Indicates Photographical Method of Supernova Discovery meta.code;obs char nullable dec_offset_dir Flag Indicates [NS] North or South Direction meta.code;pos.eq.dec;pos.distance char nullable note_flag Flag Indicates Note Present in Documentation meta.code char nullable position_flag Flag [G] Indicates Supernova Position Is the Galaxy Position meta.code char nullable discovery_date Date of Discovery time.start;obs char nullable log_axial_ratio Decimal Log of Axial Ratio phys.size.axisRatio float nullable max_epoch_flag :=Max Epoch Uncertainty, D=Maximum Light & Discovery Dates Are Different Years meta.code.error;time.epoch char nullable radial_velocity Heliocentric Recession Velocity (km/s) km/s phys.veloc;pos.heliocentric int nullable bmag Photographic or Other Magnitude of Galaxy mag phot.mag;em.opt.B float nullable inclination Inclination Angle for Disk-Like Systems (Face-On Systems=0) degree short nullable discoverer Discoverer(s) meta.id.PI char nullable